Display panel or portion thereof with a transitional graphical user interface



FIG. 1 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a first image in asequence of our design;

FIG. 2 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a second image in thesequence thereof;

FIG. 3 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a third image in thesequence thereof;

FIG. 4 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a fourth image in thesequence thereof;

FIG. 5 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a fifth image in thesequence thereof;

FIG. 6 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a sixth image in thesequence thereof;

FIG. 7 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a seventh image in thesequence thereof;

FIG. 8 is a front view of a display panel or portion thereof with atransitional graphical user interface showing an eighth image in thesequence thereof;

FIG. 9 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a ninth image in thesequence thereof;

FIG. 10 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a tenth image in thesequence thereof;

FIG. 11 is a front view of a display panel or portion thereof with atransitional graphical user interface showing an eleventh image in thesequence thereof;

FIG. 12 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a twelfth image in thesequence thereof;

FIG. 13 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a thirteenth image in thesequence thereof;

FIG. 14 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a fourteenth image in thesequence thereof;

FIG. 15 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a fifteenth image in thesequence thereof;

FIG. 16 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a sixteenth image in thesequence thereof;

FIG. 17 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a seventeenth image in thesequence thereof;

FIG. 18 is a front view of a display panel or portion thereof with atransitional graphical user interface showing an eighteenth image in thesequence thereof; and,

FIG. 19 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a nineteenth image in thesequence thereof.

The appearance of the transitional image sequentially transitionsbetween the images shown in FIGS. 1-19. The process or period in whichone image transitions to another image forms no part of the claimeddesign.

The outermost broken line rectangle illustrates a display panel orportion thereof that forms no part of the claimed design.

CLAIM The ornamental design for a display panel or portion thereof witha transitional graphical user interface, as shown and described.